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// SPDX-License-Identifier: LGPL-2.1-or-later
/*
* libfdt - Flat Device Tree manipulation
* Testcase for fdt_parent_offset()
* Copyright (C) 2006 David Gibson, IBM Corporation.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <libfdt.h>
#include "tests.h"
#include "testdata.h"
static int path_parent_len(const char *path)
{
const char *p = strrchr(path, '/');
if (!p)
TEST_BUG();
if (p == path)
return 1;
else
return p - path;
}
static void check_path(struct fdt_header *fdt, const char *path)
{
char *parentpath;
int nodeoffset, parentoffset, parentpathoffset, pathparentlen;
pathparentlen = path_parent_len(path);
parentpath = alloca(pathparentlen + 1);
strncpy(parentpath, path, pathparentlen);
parentpath[pathparentlen] = '\0';
verbose_printf("Path: \"%s\"\tParent: \"%s\"\n", path, parentpath);
nodeoffset = fdt_path_offset(fdt, path);
if (nodeoffset < 0)
FAIL("fdt_path_offset(%s): %s", path, fdt_strerror(nodeoffset));
parentpathoffset = fdt_path_offset(fdt, parentpath);
if (parentpathoffset < 0)
FAIL("fdt_path_offset(%s): %s", parentpath,
fdt_strerror(parentpathoffset));
parentoffset = fdt_parent_offset(fdt, nodeoffset);
if (parentoffset < 0)
FAIL("fdt_parent_offset(): %s", fdt_strerror(parentoffset));
if (parentoffset != parentpathoffset)
FAIL("fdt_parent_offset() returns %d instead of %d",
parentoffset, parentpathoffset);
}
int main(int argc, char *argv[])
{
void *fdt;
int err;
test_init(argc, argv);
fdt = load_blob_arg(argc, argv);
check_path(fdt, "/subnode@1");
check_path(fdt, "/subnode@2");
check_path(fdt, "/subnode@1/subsubnode");
check_path(fdt, "/subnode@2/subsubnode@0");
err = fdt_parent_offset(fdt, 0);
if (err != -FDT_ERR_NOTFOUND)
FAIL("fdt_parent_offset(/) returns %d instead of "
"-FDT_ERR_NOTFOUND", err);
PASS();
}
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